30mA Inverting Charge Pump in SOT23 for EMI-Sensitive Automotive Applications

Low-EMI, Automotive-Qualified Charge Pump in SOT23 Package that Operates at 105°C

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The MAX16945 ultra-small, monolithic, CMOS charge-pump voltage inverter accepts an input voltage ranging from +1.4V to +5.5V. This device features an ultra-low 12Ω output resistance, permitting loads of up to 30mA at +105°C with maximum efficiency. The MAX16945 operates at a frequency of 125kHz, allowing use of small external components. Its small external components, micropower shutdown mode, and wide temperature range make this device ideal for both automotive and industrial applications.

Oscillator control circuitry and four power MOSFET switches are included on-chip. The MAX16945 comes in a 6-pin SOT23 package and operates over -40°C to +105°C.
MAX16945: Typical Operating Circuit MAX16945: Typical Operating Circuit Enlarge+

Key Features

  • +1.4V to +5.5V Input Voltage Range
  • 30mA Guaranteed Output Current at +105°C
  • Slew-Rate Limited to Reduce EMI
  • 0.1µA Logic-Controlled Shutdown
  • Low 12Ω Output Resistance
  • Startup Current Limited
  • 6-Pin SOT23 Package
  • AEC-Q100 Qualified


  • Automotive and Industrial Equipment
  • GaAsFET Bias Supplies
  • Handy-Terminals, PDAs
  • Negative Supply from +5V or +3.3V Logic Supplies
  • Small LCD Panels

See parametric specs for Charge Pumps (45)

Part NumberTopologyVIN
Unadj. VOUT
Oper. Freq.
Oper. Temp.
minmaxmaxtypSee Notes
MAX16945 Inverter1.45.51.7-VIN0.03125-40 to +105
$1.71 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
Product Reliability Reports: MAX16945.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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